| Activity Of Bacterial Proteolytic Enzymes on Antinutritional Factors in Soybeans and the Effect on Growth and Organ Weights of Piglets |
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| 作者姓名： | Huo Gui cheng Yang Li jie Xu q.y. |
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| 作者单位： | Animal Nutrition Institute，Northeast Agricultural University，Harbin 150030，PRC |
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| 摘 要： | １ Ｉｎｔｒｏｄｕｃｔｉｏｎ Ａｌｔｈｏｕｇｈｔｈｅｈｉｇｈｐｒｏｔｅｉｎｃｏｎｔｅｎｔｏｆｓｏｙｂｅａｎｓｅｅｄｓｍａｋｅｔｈｅｍａｔｔｒａｃｔｉｖｅｃａｎｄｉｄａｔｅｓａｓ－ｓｏｕｒｃｅｓｏｆｄｉｅｔａｒｙｎｉｔｒｏｇｅｎｆｏｒｍｏｎｏｇａｃｔ...
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| 关 键 词： | 细菌蛋白溶解酶活性 大豆抗营养因子 仔猪生长 器官重量 |
Activity Of Bacterial Proteolytic Enzymes on Antinutritional Factors in Soybeans and the Effect on Growth and Organ Weights of Piglets |
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| Huo Gui cheng,Yang Li jie,Xu q.y..Activity Of Bacterial Proteolytic Enzymes on Antinutritional Factors in Soybeans and the Effect on Growth and Organ Weights of Piglets[J].Journal of Northeast Agricultural University,1999,6(2):107-111. |
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| Authors: | Huo Gui-cheng YANG Li-jie Xu qy |
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| Abstract: | A significant reduction of trypsin inhibitory activity by selected bacterial proteolytic enzymes was demon-
strated in vitro. Two trials were conducted to examine the capacity of the tested enzymes to inactivate soybean
ANFs in vivo. In trial I,twenty-four piglets weaned at four weeks of age were assigned in replicate groups of
4 piglets per pen to one of three dietary treatments: (1)control; (2)Enzyme 1-supplemented(E1); (3)Enzyme
2-supplemented (E2). In trial II,twenty piglets weaned at five weeks of age were alloted to five treatment di-
ets:(1)contro,l: (2)0. 1％ P4-supplemented; (3)0. 5％ P4-supplemented; (4)0. 1％ P7-supplemented; (5)0.
5％ P7-supplemented. The optimum pH for hydrolysis was 8 for E,9-11 for E2,8.5 for P4 and nuctral for P7.
After 17 days of the trial,daily gain of piglets on enzymes E1 and E2 was 36％ and 18％ more than that in the
control group,although the difference was not significant. The animals on the treated groups had a tendency
to have lighter heart(7.8 and 5.9％),spleen(11. 1 and 7.4％) and pancreas(16.7 and 12.5％ for E1 and E2
respectively)in relation to empty body weight than those in the control. The small intestine of pigs on the
treated groups was significantly lighter(18.9 for E1 and 7.7％ for E2) than that in the control( P ＜ 0.05 ).
The stomach (26.4 and 24％,p=0. 198) and cecum(21.9and 9.4％,p=0. 114) also showed the same pat-
tern. The growth depression was attributed to reduced feed intake caused by antinutritional factors in soy
beans. It is concluded that supplements of proteolytic enzymes E1 or E2 had a positive effect on growth and ef-
ficiency and caused much less reaction in the gut as manifested by the weight of the tract and of its accessory
organs. Dietary saupplements of P4 or P7 had no significant effect on growth,but reduced reaction of soybean
antinutritional factors in the gut,especialy P4 in dose of 0.5％. The growth depression was attributed to low
feed intake caused by antinutritional factors in soybeans. |
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| Keywords: | soybean piglet trypsin inhibitors lectin enzymatic inactivation |
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